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| 1 | +--- |
| 2 | +title: Quandela QPUs Information |
| 3 | +description: Learn more about Quandela QPUs available at Scaleway. |
| 4 | +tags: quandela qpu |
| 5 | +dates: |
| 6 | + validation: 2025-11-21 |
| 7 | + posted: 2021-11-21 |
| 8 | +--- |
| 9 | + |
| 10 | +Developed by **Quandela**, a French quantum computing leader founded in 2017. Their technology is based on Linear Optical Quantum Computing (LOQC), utilizing proprietary single-photon sources and reconfigurable optical circuits to process information at room temperature. |
| 11 | + |
| 12 | +## Key features |
| 13 | + |
| 14 | +* **Room temperature operation:** Unlike many quantum technologies that require cryogenic temperatures, Quandela's photonic QPUs operate at room temperature, simplifying infrastructure needs. |
| 15 | +* **All-to-All connectivity:** The photonic qumodes are interconnected through linear optical components, allowing for flexible circuit designs and |
| 16 | +* **Linear optical computing:** Utilizes single photons to process information through reconfigurable optical circuits, operating largely at room temperature (chip-level). |
| 17 | +* **High-Quality Sources:** Powered by proprietary high-performance single-photon sources, ensuring indistinguishable photons for high-quality interference. |
| 18 | +* **Native probabilistic computing:** The hardware natively implements sampling tasks, making it inherently suited for probabilistic modeling. |
| 19 | + |
| 20 | +## Use cases |
| 21 | + |
| 22 | +* **Quantum Machine Learning (QML):** Ideal for generative modeling, classification, and training quantum neural networks (QNNs). |
| 23 | +* **Linear algebra:** Efficiently solves differential equations and complex linear algebra problems used in engineering and physics. |
| 24 | +* **Certified randomness:** Generation of high-quality entropy for cryptography and stochastic simulations. |
| 25 | + |
| 26 | +## Quandela QPUs available at Scaleway |
| 27 | + |
| 28 | +Scaleway provides access to Quandela's "Mosaiq" generation devices and their digital twins. |
| 29 | + |
| 30 | +| Platform name | QPU Model | Qubits & Topology | Fidelity Metrics (Avg)* | Speed Metrics | Pricing Model | |
| 31 | +| :--- | :--- | :--- | :--- | :--- | :--- | |
| 32 | +| **QPU-ASCELLA-6PQ** | Mosaiq-6 | 6 photons, 12 modes, All-to-All | 1 gate: 99.6% 2 gates: 99% readout: 99% | 4Mhz 144 op/s | 0.3€/circuit + 0.000001€/shot or 750€/hour | |
| 33 | +| **QPU-ALTAIR-10PQ** | Mosaiq-10 | 10 photons, 20 modes, All-to-All | 1 gate: 99.94% 2 gates: 98.2% readout: 99% | 3Mhz 400 op/s | X | 0.3€/circuit + 0.000001€/shot | |
| 34 | +| **QPU-BELENOS-12PQ** | Mosaiq-12 | 12 photons, 24 modes, Dual-Rail-Encoding, All-to-All | 1 gate: 99.6% 2 gates: 99% readout: 99% | 3Mhz 576 op/s | X | 0.3€/circuit + 0.000001€/shot or 1000€/hour | |
| 35 | + |
| 36 | +Developed by Quandela, exQalibur is a cutting-edge photonic quantum emulator accelerated by Scaleway's most powerful GPUs. This synergy enables large-scale simulations, allowing users to explore complex parameter spaces across 31 photonic qubits at kilohertz rates, accelerating prototyping and optimization of advanced quantum algorithms. |
| 37 | + |
| 38 | +| Platform name | Hardware & emulator | Qubits & topology | Fidelity metrics | Pricing model | |
| 39 | +| :--- | :--- | :--- | :--- | :--- | |
| 40 | +| **EMU-SAMPLING-L4** | L4 GPU, exQalibur | 26 photons, hundred modes, All-to-All | Logical qubits | 1.125€/hour | |
| 41 | +| **EMU-SAMPLING-2L4** | 2x L4 GPU, exQalibur | 27 photons, hundred modes, All-to-All | Logical qubits | 2.25€/hour | |
| 42 | +| **EMU-SAMPLING-4L4** | 4x L4 GPU, exQalibur | 28 photons, hundred modes, All-to-All | Logical qubits | 5.5€/hour | |
| 43 | +| **EMU-SAMPLING-4H100SXM** | 4xH100 SXM GPU, exQalibur | 30 photons, hundred modes, All-to-All | Logical qubits | 17.415€/hour | |
| 44 | +| **EMU-SAMPLING-8H100SXM** | 8xH100 SXM GPU, exQalibur | 31 photons, hundred modes, All-to-All | Logical qubits | 34.542€/hour | |
| 45 | + |
| 46 | +## Perceval: The native SDK for photonic |
| 47 | + |
| 48 | +**Perceval** is the open-source software framework created by Quandela for linear optical quantum computing. It provides a simple and powerful object-oriented API to: |
| 49 | + |
| 50 | +- **Design** - linear optical circuits (Beam Splitters, Phase Shifters, etc.). |
| 51 | +- **Simulate** - photon behavior (ideal or noisy simulation). |
| 52 | +- **Execute** - algorithms on various backends: local simulators, high-performance remote simulators (on GPU), or real photonic QPUs. |
| 53 | + |
| 54 | +On Scaleway QaaS, the integration is natively integrated into `perceval-quandela` package, which acts as a remote backend for your sequences. |
| 55 | + |
| 56 | +<Message type="tip"> |
| 57 | + Refer to the [How to program Quandela processors](/quantum-computing/how-to/use-perceval-qpus) to learn how to use them at Scaleway. |
| 58 | +</Message> |
| 59 | + |
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